From: ian <ian@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Tue, 8 Sep 2015 13:49:19 +0000 (+0000)
Subject: 	PR other/67457
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=37bab844414c75d11ae46f45196562993de6ae6a;p=thirdparty%2Fgcc.git

	PR other/67457
	* mmap.c (backtrace_alloc): Correct test for mmap failure.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@227529 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/libbacktrace/ChangeLog b/libbacktrace/ChangeLog
index f44a73d7cc09..92ec7a13c4ad 100644
--- a/libbacktrace/ChangeLog
+++ b/libbacktrace/ChangeLog
@@ -1,3 +1,8 @@
+2015-09-08  Ian Lance Taylor  <iant@google.com>
+
+	PR other/67457
+	* mmap.c (backtrace_alloc): Correct test for mmap failure.
+
 2015-08-31  Ulrich Weigand  <Ulrich.Weigand@de.ibm.com>
 
 	* configure.ac: For spu-*-* targets, set have_fcntl to no.
diff --git a/libbacktrace/mmap.c b/libbacktrace/mmap.c
index 1ecf13119114..47c564f13f81 100644
--- a/libbacktrace/mmap.c
+++ b/libbacktrace/mmap.c
@@ -139,7 +139,7 @@ backtrace_alloc (struct backtrace_state *state,
       asksize = (size + pagesize - 1) & ~ (pagesize - 1);
       page = mmap (NULL, asksize, PROT_READ | PROT_WRITE,
 		   MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
-      if (page == NULL)
+      if (page == MAP_FAILED)
 	error_callback (data, "mmap", errno);
       else
 	{